"A lot of us felt it was not even necessary to grow as much as we are allowed by state law," Machado said. "The people who grew here and the patients were only interested in using this as medicine."

The government says marijuana from Oregon providers is going on the black market, sometimes depriving people with state cards that allow them to use it for pain relief and other medical reasons.

Drug Enforcement Administration agents took at least four dump trucks of marijuana from the property last week. The site had more than 22 providers who grew for about 80 patients.

Machado said some of his patients are at a loss as to what to do now.

"Basically, they have to hope other patients will donate medicine to them free of charge," Machado said. "It's too late to grow medicine for them now. The season is nearly over. We were getting close to harvest."